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4. Maintenance
4-10
February 2001 3160-A2-GB21-90
LOFC
The loss of frame count for the
current interval. This is a count of
the number of times that an LOF is
declared. The maximum count is
255.
The total loss of frame count for the
previous
x
hours, where
x
is
24 hours for aggregate performance
and 8 hours for port performance.
CSS
(Not valid
for Port
registers.)
The number of controlled slip
seconds for the current interval.
The total number of controlled slip
seconds for the previous
x
hours,
where
x
is 24 hours for aggregate
performance and 8 hours for port
performance.
StEvnt
(Only valid
for User
registers.)
The status events register records
whether one or more of the
following events have occurred at
least once during the interval. The
event is identified by a letter as
follows:
Y – A Yellow Alarm signal has
been received on the network
interface.
L – Loss Of Signal has occurred
on the DTE Drop/Insert (DSX-1)
interface.
E – The Excessive Error Rate
threshold has been exceeded.
F – A Frame Synchronization Bit
Error has been detected.
V – A Bipolar Violation has been
detected.
If none of these events occurred
during the interval,
StEvnt=none
will be displayed.
N/A
Complete
(Only valid
for far-end
port
registers.)
Bad line conditions or loopback
tests may prevent far-end port
statistics from reaching the
DSU/CSU. This field indicates
whether the 15-minute interval
contains 900 seconds of statistics.
If one or more seconds of far-end
statistics are missing, this field will
display
Complete=No
, otherwise it
will display
Complete=Yes
. This
field is only displayed when Far is
selected from the Prt
n
screen.
N/A
Table 4-3. Performance Registers (2 of 2)
Register Interval Description Totals Description